Firmware update without battery?
chunter2 0 Points
edited November -1 in Garmin Auto Forum (Garmin Nuvi, Garmin Drive Forum)
I've got an old Garmin Nuvi 750 with a dead battery. It works fine with the car adapter. I'd like to update the firmware but the webupdater says to make sure the battery is fully charged. I did read up a little about making a USB charging cable by shorting pinX to pin4 but I'm a little chicken to try the update if there's a possibility of bricking the GPS. Has anyone tried this before? Is there a certain order to do things that works?